Classification Of Substances

SACE Stage 1 Chemistry – Experiment – Classification of veg marrows objective lens: To examine the physical properties of a fare of nubs and to classify them into groups rule: 1. exam for conductivity in its un potpourried state by having two electrodes in the substance that do not achieve and square up whether the light bulb turns on. 2. Testing to see the issuing of heat on the substance, the heat was supplied with the etna burner. We heated each substance for two minutes to see if a transfer occurred. 3. Then we checked if its state was potpourrid and trialed whether it conducted galvanic energy in its changed form. This was done in the same carriage as testing its pure state. 4. Then we tested the substance to see if is fade out in pissing. Simply having both(prenominal) of the substance into a test tube and adding water and ascertain what happens next. 5. If it did dissolve we tested whether it c onducted electricity when in a tooth root with water. 6. Then finally, we tested if it was disintegrable in dichloromethane. Results: Name | ordinance and State |Cond. Of pure substance |Effect of Heat | liquescent point |Cond. Of molten substance | solubility in water |Cond.

Of substance in water |solvability in CH2Cl2 | |Iodine |I2 comforting |NO |YES sublimation |113°C |NO |YES |NO |YES | |Naphthalene |C10H8 impregnable |NO |YES semiliquid |80.26°C |NO |NO |N/A |YES | |Ethanol |C2H5OH Liquid |NO |YES Vaporises |N/A |NO |Already liquid |N/A |Doesn’t mix | |Wax |CXHY straig htforward |NO |YES Liquid |45°C |NO |NO! |N/A |NO | | mainstay |SiO2 Solid |NO |NO CHANGE |1713°C |N/A |NO |N/A |NO | | yard nitrate |KNO3 Solid |NO |YES Liquid |338°C |YES |YES |YES |NO | |Zinc oxide |ZNO2 Solid |NO |NO / colour change |1975°C |N/A |YES |NO |NO | | atomic number 16 |S Solid |NO |YES Liquid |113°C |NO |NO |N/A |NO | |Sodium chloride |NaCl Solid |NO |YES Liquid |801°C |YES |YES |YES |NO | |Sugar |C12H22O11 Solid |NO |YES Liquid |146°C |NO |YES |NO |NO | |N.B.:...If you want to get a safe essay, order it on our website: OrderCustomPaper.com

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